package com.itheima.idea;

public class HelloWorld {
    public static void main(String[] args){
        int[] arr = new int[4];
        arr[0]=100;
        arr[3]=15;
        int a=arr[1];
        System.out.println(arr[0]);
        System.out.println(arr[3]);
        System.out.println(a);
    }
}
